coe: nemerteans of west and northwest coasts. 265 



Color. — Deep reddish orange with an opaqiie whitish tinge, dark, 

 dull yellowish red, or bright brick red ; ventral surface duller and 

 with more whitish. Others are bright and deep oi-ange anteriorly 

 shading to a bright reddish brown in the middle and posterior por- 

 tions of body ; ventral surface bright orange anteriorly becoming 

 duller and more nearly brick red posteriorly. Grayish or dull 

 brownish after preservation. In females with mature ova the olive 

 green color of the ova shows very conspicuously through the body 

 walls. 



Ocelli.^- K few ocelli of moderate size lie in a single irregular 

 cluster on each side of head ; usually only 4 to 8 in number oh each 

 side, the anterior one being largest (PI. 23, fig. 172) . 



Proboscis. — Of a very pale rose tint from color of distinct pig- 

 ment granules. Armature of typical form with two pouches of 

 accessory stylets (PL 23, lig. 175). Basis of central stylet conical 

 and somewhat bell-shaped, of moderate proportions; central stylet 

 slender and acutely pointed, usually a trifle longer than its basis (PL 

 23, ligs. 173-176). Length of basis about .05 to .06 mm., width 

 nearly .03 mm; length of stylet .05 to .065 mm. Proboscis is usu- 

 ally provided with 10 nerves, although 11 or 12 occur in some indi- 

 viduals. 



Cephalic glands aie well developed. Typical submuscular glands 

 are also present in the brain region, but do not extend far posteri- 

 orly. 



Alimentary canal. — Intestinal caeca extend far forw^ard above 

 the dorsal ganglia. Stomach and pylorus stretch posteriorly as a 

 slender tube nearly as far as the most anterior sexual glands, Avhere 

 the latter opens into the dorsal wall of the intestinal caecum as 

 usual. 



Nephridia. — Nephridial canals extend forward to the brain 

 i-egion, where a rather large canal lies in the lateral angle between 

 dorsal and ventral ganglia and beneath the intestinal caecum on each 

 side. Near posterior end of dorsal ganglion, or a few sections more 

 posteriorly, a single large efferent duct on each side leads past the 

 external side of the lateral nerve to ventro-lateral surface of body. 

 The nephridial tubules extend about twice as far posterior to efferent 

 ducts as anterior to them. 



Cerebral sense organs are well developed and greatly elongated ; 

 they are situated a short distance in front of brain and are connected 

 with exterior of body on latero -ventral surfaces near tip of head. 



